are you trying tell that why data name under your sections has changed to item in renderItem right? SectionList will work as for loop where it will take your data from {[ { title: ‘D’, data: [‘Devin’] }, { title: ‘J’, data: [‘Jackson’, ‘James’, ‘Jillian’, ‘Jimmy’, ‘Joel’, ‘John’, ‘Julie’] } ]} and return one by … Read more
I made this one: https://snack.expo.io/H1rGEMRAr I used ‘state’ to control what was inside of emptyCircles constructor(props) { super(props); this.state = { emptyCircles: [{ image: placeholder, },{ image: placeholder, },{ image: placeholder, },{ image: placeholder, }] }; this.clearEmptyCircles = this.clearEmptyCircles.bind(this); this.addCircle = this.addCircle.bind(this); } And wrote some functions to update that state: clearEmptyCircles() { this.setState({emptyCircles: [{ … Read more
Generally, you can share a lot of business logic between react native and web applications. By business logic, I basically mean the logic in your app that aren’t components. Trying to share components is pretty hard, since the base level components are different (View vs div, etc), and you generally want things structured pretty differently … Read more
The issue with your code is the condition, it processes all digits in reverse until the first non-zero character, without limit. You could keep a loop counter and not iterate more than 6 times; a for-loop with appropriate exit condition would work here. Though you don’t need to make it this complicated. Two simple methods: … Read more
your render method should looks like this: render () { let s=”kaveh”; return ( <Text> {s === ‘kaveh’ ? ‘Hello kaveh’ : ‘Hello world’} </Text> ); } this is based on your code. solved Conditional Text Rendering in React Native
It is hard to say what you call “complex platform”, React is a library, not a framework or a platform (maybe RN is), so I would not consider it as a complex. There are pretty much libraries which are using virtual DOM rendering, I have few options for you: Deku – a library for rendering … Read more
Actually, this question is for earlier builds of Xcode version 12, and this issue is disappeared in version 13.x I doubt anyone use version 12, but for fixing on Xcode 12, running and debugging on physical device could be a valid solution. solved Fresh init React Native Build has CompileSwiftSources normal x86_64 com.apple.xcode.tools.swift.compiler error on … Read more
<View> <Image> <!– remaining content goes here –> </Image> <Button> </Button> </View> You can use above curved blue area by using a image background. Another way to achieve that is by using borderBottomLeftRadius: number borderBottomRightRadius: number in this method you dont have to provide any background image.You only have to make a rectangluar area and … Read more
Taking a guess here but it looks like you want to promis-ify the Voice.onSpeechResults callback. Have your MicButton function return a promise that resolves with the result you want export const MicButton = () => new Promise((resolve, reject) => { Voice.start(‘en-US’) Voice.onSpeechResults = (res) => { resolve(res.value[0]) } Voice.onSpeechError = reject }).finally(() => { Voice.removeAllListeners() … Read more
The second one is invalid. The prototype of an arrow functions is the following : variableName = (arguments) => { Body } Your onPress should be : onPress = {() => this.pick(curJob,i)}>, otherwise, the function is called everytime a render happens, so always. With the () => before, you are telling the program to run … Read more
React Native is a great place to start. With today’s ecosystem lead by flutter and react, Angular has unfortunately fallen behind. Both, Cloud functions are Firebase’s solution to server instances, these create short-lived functions that do complex or secure tasks such as handle payments, delete/manage users, etc. While the bulk of your app and its … Read more
The biggest benefit of going with React-Native (rather than Xamarin or some other hybrid mobile) is that you can use what you learn here, and take it to the web by using React.JS. You most likely won’t re-use code, but it’ll be a breeze to setup the web app after making the mobile app. Also, … Read more
At first, you should be able to understand the basics of flex styles. Small list of tutorials in no particular order: https://facebook.github.io/react-native/docs/flexbox.html https://code.tutsplus.com/tutorials/get-started-with-layouts-in-react-native–cms-27418 http://www.reactnativeexpress.com/flexbox Really, you don’t need much else, only exercise. However, if you’re not looking for propositive ideas to enhance your react-native understanding, but you just need somebody who can get the work … Read more
To avoid Warn: Possible unhandled Promise Rejection (id:0) useEffect(() => { fetchData(); }, []); async function fetchData(){ try{ const requestArray = await Promise.all(ids?.map((id) => { return fetch(`https://jsonplaceholder.typicode.com/posts/${id}`) .then((response) => response.json()) .then((dataLoc) => { return dataLoc.title; }) .catch((error) => console.error(error)); })); console.log(JSON.stringify(requestArray)); setDataLoc(requestArray); } catch (error) { console.log(error); } } solved How to get multiple API … Read more
You might be interested in this project. https://github.com/redgeoff/mson MSON is a JSON language to describe forms and there is an example in React with Material UI. I have discovered it yesterday and didn’t test it yet. But it looks nice solved Build Dynamic form from JSON with Material UI